How does KH2PO4 induce controlled flocullation?

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  1. Please help Physical pharmacy

    How does KH2PO4 induce controlled flocullation?
  2. Please help Physical pharmacy

    How does KH2PO4 induce controlled flocculation?
  3. physical pharmacy

    Hoy does KH2PO4 induce controlled flocculation..?
  4. chemistry

    does kh2po4 react with sodium lauryl sulphate and can we use nah2po4 insted of kh2po4 in prepration of 0.2 m phosphate buffer ?
  5. College Chemistry

    What is pH buffer of 0.1 mol L-1 Na2HPO4/O.15 mol L-1 KH2PO4? KH2PO4? Given Ka(H2PO4-) = 6.2 x 10-8). I would like to know the correct formula, steps for the answer Thank you
  6. Analytical Chemistry

    This question pertaining to buffer systems! How would you prepare 10.0mL of 0.0100M phosphate buffer, pH = 7.4 0, from stock solution of 0.100M KH2PO4 and 0.250M K2HPO4, pKa of KH2PO4 is 7.20. Please help me in figuring out how I even start this problem...as well as attempting...
  7. Chemistry

    Suppose you have to prepare 1.00 L of the solution ( KH2PO4 and Na2HPO4 pH=7.31) and that this solution must be isotonic with blood (have the same osmotic pressure as blood). What mass of KH2PO4 would you use?
  8. Chemistry

    A 10.00-mL sample of 0.1000 M KH2PO4 was titrated with 0.1000 M HCl Ka for phosphoric acid (H3PO4): Ka1= 7.50x10-3 ; Ka2=6.20x10-8 ; Ka3= 4.20x10-10 Calculate the pH after addition of 10.00 mL of HCl to the KH2PO4 solution?
  9. chemistry

    As a technician in a large pharmaceutical research firm, you need to produce 200.mL of 1.00 M a phosphate buffer solution of pH = 7.19. The pKa of H2PO4− is 7.21. You have 2.00 L of 1.00 M KH2PO4 solution and 1.50 L of 1.00 M K2HPO4 solution, as well as a carboy of pure ...
  10. Chemistry

    As a technician in a large pharmaceutical research firm, you need to produce 100.mL of 1.00 M a phosphate buffer solution of pH = 7.45. The pKa of H2PO4− is 7.21. You have 2.00 L of 1.00 M KH2PO4 solution and 1.50 L of 1.00 M K2HPO4 solution, as well as a carboy of pure ...
  11. CHEMISTRY

    As a technician in a large pharmaceutical research firm, you need to produce 450. mL of 1.00 M a phosphate buffer solution of pH = 7.20. The pKa of H2PO4− is 7.21. You have 2.00 L of 1.00 M KH2PO4 solution and 1.50 L of 1.00 M K2HPO4 solution, as well as a carboy of pure...
  12. biochemistry

    if 4 volumes of 0.1M monobasic potassium phosphate, KH2PO4, are mixed with 2 volume of 0.1 M dibasic sodium phosphate, Na2HPO4, what will be the pH of the mixture? What if 4 volumes of 0.1 M KH2PO4 are mixed with 8 volumes of 0.1 M ethanolamine base(pka=9.44) what will be pH ...
  13. chem

    Calculate [H+] in 0.375M H2PO4 Ka=6.2x10^-8 I know I'm suppose to write the equation first, but I'm not sure if I did it right: H2PO4 + H2O <=> 2H+ + PO4 is that right? You need to clarify the question. Is that a salt, such as KH2PO4, that is 0.375 M or is it the ion ...
  14. Chemistry

    You need to prepare 1.000 L (in a volumetric flask) of 0.50 M phosphate buffer, pH 6.77. Use the Henderson Hasselbalch equation with a value of 6.64 for pK2 to calculate the quantities of K2HPO4 and KH2PO4 you need to add to the flask. What concentrations of [K2HPO4] and [...
  15. physics

    A uniform magnetic field is establish perpendicular to the plane of a loopof radius 14cm.Resistance 40ohmn, and negligible self-induce.The magnitude of the field increase at a rate of 400mT/s. (i)Find the induce emf in the loop (ii)the induced current in the loop and (iii)The ...
  16. Reaction Kinetics

    I have been studying a journal, and their objective is to find the ignition temperature, which can shift a reaction from being kinetics-controlled to being diffusion-controlled. What is the advantage of a reaction being diffusion-controlled over a reaction being kinetics-...
  17. physics

    When you increase the number of turns in a coil to induce more voltage, you do which of the following?. A) only get more voltage if the resistance of the larger coil remains unchanged.B) None of the above.C) do more work to induce the greater voltage.D) really do get "...
  18. physics

    When you increase the number of turns in a coil to induce more voltage, you do which of the following?. A) only get more voltage if the resistance of the larger coil remains unchanged.B) None of the above.C) do more work to induce the greater voltage.D) really do get "...
  19. chemistry

    Identify the independent, dependent and controlled variables: a)Does the activity of soil affect plant growth? Independent: Dependent: Controlled: b)Does getting a good night's sleep affect performance on a test? Independent: Dependent: Controlled:
  20. Science

    There can be several controlled variables. If an experiment is to be useful, only one variable at a time can be manipulated intentionally. All other variables must be controlled throughout all parts of the experiment. If more than one variable is altered, the results of an ...
  21. Child Development

    I need to know what an over controlled, under controlled and reilient child's personality is like
  22. chemistry

    complete KH2PO4(aq)+KOH(aq)
  23. English

    Word bank agenda amiable befuddle blight boisterous clarity compliant conserve debut gory gross induce leeway limber maze oracle partisan reimburse vacate vagabond Choose a word from the word bank to find a word that is most nearly or the same to the words in () offended by ...
  24. Chemistry

    How do i prepare KH2PO4-KOH buffer 0.2 M of pH 7.4?
  25. Science

    How do you set up a controlled experiment ? What's the purpose of a control group? How many variables should a controlled experiment have? What are the difference between observation and inferences? I REALLY NEED HELP!!!! PLEASE HELP ME !!!!
  26. Biology - GI Tract

    In my notes it says that the last 2/3 of the esophagus is controlled by smooth muscle (controlled by ANS and ENS). What is ENS? I'm listening to the lecture the it's something nervous system but I have no idea what the E stands for.
  27. geography

    Under the Soviet system, the government a. controlled all forms of communication. b. allowed newspapers to print whatever they wanted. c. controlled editorials but not the reporting of news. d. encouraged access to a wide variety of news sources.
  28. chemistry

    Which of the answer choices is correctly defined as the variable in a controlled experiment that is purposely changed or manipulated? constant controlled variable dependent variable independent variable is it b?
  29. Chemistry

    What mass of KH2PO4 is needed to prepare 500.0 mL of a 0.067M solution?
  30. biochemistry

    how to calculate a primary standard buffer using Kh2po4 and Na2Hpo4..
  31. Biochem

    Calculate the pH of the buffer system of 0.20M K2HPO4/0.25M KH2PO4
  32. Geography

    Under the Soviet system the government.. controlled all forms of communication. allowed newspapers to print whatever they wanted. controlled editorials but not the reporting of news. encouraged access to a wide variety of news sources. I think it is either 3 or 4
  33. Chemistry

    You are to prepare a KH2PO4 and Na2HPO4 solution with pH=7.31. What should the concentration of [2(HPO4) 2-] / [H2PO4-]
  34. Social Studies

    What country (if any) controlled Gambia in 1914? We were supposed to create a chart with controlled countries in Africa (I have a map in my textbook), but Gambia is so small that there is no room for the color to show which country (again, if any) it belongs to.
  35. Chemistry--DR.BOB HELP!

    If 1 volume of 0.1 KH2PO4 is mixed with 2 volumes of 0.1 OHEtNH2 (pka=9.44), what will be the pH of the mixture? I know I know: HH equation
  36. BIOCHEMISTRY

    WHAT METHOD CAN BE USED TO PREPARE 0.2M POTASSIUM PHOSPHATE BUFFER USING KH2PO4 AND KOH?
  37. chemistry

    describe an alternative method to prepare a 0.2M potassium phosphate buffer using KH2PO4 and KOH
  38. Chemistry

    Calculate the pH of a buffer solution obtained by dissolving 16.0 g of KH2PO4(s) and 27.0 g of Na2HPO4(s) in water and then diluting to 1.00 L. (pKa=7.21)
  39. Chemistry

    What volume of 85% H3PO4(d=1.68g/mL) and weight of KH2PO4 are required to prepare a buffer of pH=3 that has an ionic strength of 0.2?
  40. psychology

    A newspaper advice columnist suggests that thinking can be voluntarily controlled and changed but that emotions are gut-level, biological reactions that can't be voluntarily controlled or modified. Use your knowledge of emotion research and theory to either support or refute ...
  41. psychology

    A newspaper advice columnist suggests that thinking can be voluntarily controlled and changed but that emotions are gut-level, biological reactions that can't be voluntarily controlled or modified. Use your knowledge of emotion research and theory to either support or refute ...
  42. chem

    I posted a question earlier that I was having trouble with, but I was unable to attempt to try it again for several days after posting. The question was: A buffer is made up of .300 L each of .500 M KH2PO4 and .317 M K2HPO4. Assuming tha the volumes are additive, calculate a) ...
  43. 7th grade

    You need to give examples for someone else if they would need help on controlled experiments which includes pictures that you give and someone tells if it is a controlled experiment or what the variable is
  44. ap statistics

    Which of the following is not correct? A. The rejection region is controlled by the alpha level and the alternate hypothesis. B. The p-value measures the probability that the null hypothesis is true. C. The probability of a Type I error is controlled by the selection of the ...
  45. Chemistry

    Calculate pH when 0.060 mols of HCl are added to 1.000 L of a buffer containing 0.499M KH2PO4 and 0.193M K2HPO4
  46. Social Studies

    To help me answer these questions you need to go to Google and search European Imperialism in Africa and then go to images 1.What two European countries had the most colonized land in Africa French and British 2.What country controlled Egypt British 3.What country controlled ...
  47. electronics and circuits

    The circuit below contains two dependent sources: a voltage controlled voltage source and a voltage controlled current source. Figure 3-1 The circuit elements have the following values: Vin=15V, R1=0.5Ω, R2=1.5Ω, R3=5Ω, A=2V/V and B=1.5A/V.
  48. SS

    During the Middle Ages, why was life in northern Italy different from life in the rest of Europe? A:italians were threatened by Muslim invaders. B:italians were not as closely controlled by nobles or the church. C:italians were controlled by popes and kings. D:italians were ...
  49. economics

    If departing tenants sell access to rent-controlled apartments, whi is likely to end up with the apartments? How else might scarce rent-controlled apartments be distributed? 1) the highest bidders will end up with the appartment, with the "economic rent" from the value of a ...
  50. Science

    How did Lamarck and Darwin differ in their thinking about species? A. Darwin thought that organisms could induce their own changes, while Lamarck thought that change could only be induced by an organism's environment. B. Darwin thought that change could occur in individual ...
  51. Science

    How did Lamarck and Darwin differ in their thinking about species? A. Darwin thought that organisms could induce their own changes, while Lamarck thought that change could only be induced by an organism's environment. B. Darwin thought that change could occur in individual ...
  52. Science

    How did Lamarck and Darwin differ in their thinking about species? A. Darwin thought that organisms could induce their own changes, while Lamarck thought that change could only be induced by an organism's environment. B. Darwin thought that change could occur in individual ...
  53. Science

    How did Lamarck and Darwin differ in their thinking about species? A. Darwin thought that organisms could induce their own changes, while Lamarck thought that change could only be induced by an organism's environment. B. Darwin thought that change could occur in individual ...
  54. Science-Ms.Sue

    How did Lamarck and Darwin differ in their thinking about species? A. Darwin thought that organisms could induce their own changes, while Lamarck thought that change could only be induced by an organism's environment. B. Darwin thought that change could occur in individual ...
  55. science (CHECK plz)

    How did Lamarck and Darwin differ in their thinking about species? A. Darwin thought that organisms could induce their own changes, while Lamarck thought that change could only be induced by an organism's environment. B. Darwin thought that change could occur in individual ...
  56. Science

    How did Darwin and Lamarck differ in their thinking about change in species? Darwin thought that organisms could induce their own changes, while Lamarck thought that change could only be induced by an organism’s environment. Darwin thought that change could occur in ...
  57. science (any tutor)

    2. How did Darwin and Lamarck differ in their thinking about change in species? A.Darwin thought that organisms could induce their own changes, while Lamarck thought that change could only be induced by an organism’s environment. B.Darwin thought that change could occur in ...
  58. Chemistry

    Which four salts could undergo hydrolysis to act as buffers if added to their parent acid or base? KF KH2PO4 NaCl KBr NaClO4 C5H5NH3Cl NH4Cl
  59. Chemistry

    a solution made by dissolving 2.733g KH2PO4 and 4.508g K2HPO4 in water to give 250 ml of solution. is the answer... 7.432= ph
  60. Chemistry

    A phosphate buffer solution contain 0.08 M K2HPO4 and 0.12 M KH2PO4. pKa values for H3PO4 are 2, 6.8, and 12.2. Calculate the concentrations of a) H3PO4 b) H2PO4- c) HPO42- d) H+ e) OH- f) K+
  61. Social Studies

    To induce someone to convert to one’s own religious faith is to proselytize*** advocate baptize confirm
  62. Chemistry

    how would you prepare 250 mL solution containing the following: 0.30 M mannitol, 0.025 M phosphate buffer pH 7.5? You are given solid mannitol, kh2po4, and k2hpo4. (pKa=6.86)
  63. Science

    In the experiment water clock : what changes (independent variable) , how does it responds to the changes made(dependent variable), and what is being controlled (controlled variable). Pleas I really need this by today. And also my question for science fair is what part does ...
  64. Science

    1. When evolution was first proposed, which of the following was used as evidence to support the idea? A. observations of nature B. laboratory experiments C. extensive fossil collections D. genetic sequences 2. How did Darwin and Lamarck differ in their thinking about change ...
  65. chemistry

    3. a) Calculate the pH of the buffer solution prepared by mixing 40.0 mL of 0.100 M H3PO4 and 60.0 mL of 0.100 M KH2PO4. Given the pKa of H3PO4 is 2.12.
  66. Chemistry

    A buffer is made up of .300 L each of .500 M KH2PO4 and .317 M K2HPO4. Assuming tha the volumes are additive, calculate a) the pH of the buffer b) the pH of the bugger after the addition of .0500 mol of HCl to .600 L of the buffer. c) the pH of the buffer after the addition of...
  67. chemistry

    Problem: Need to prepare a 250 mL buffer of pH 7.00 using equimolar K2HPO4 and KH2PO4 solutions. Ka for phosphoric acid: Ka1=7.2 x 10^-3 Ka2=6.3 x 10^-8 Ka3=4.2 x 10^-13 I though the hard part of this was picking the right equation/Ka value, but I am not getting the right ...
  68. Chemistry

    A buffer solution of volume 100.0 mL is 0.140 M Na2HPO4(aq) and 0.120 M KH2PO4(aq). What are the pH and the pH change resulting from the addition of 55.7 mL of 0.0100 M NaOH(aq) to the buffer solution?
  69. Biology Help Please!

    1) A transcriptional fusion of regulatory sequences of a particular gene with a reporter gene results in relatively uniform expression of the reporter gene in all cells of an organism, whereas a translational fusion with the same gene shows reporter gene expression only in the...
  70. College Chemistry

    What is pH of the buffer 0.1 mol L-1 Na2HPO4/0.15 mol L-1 KH2PO4? (Given Ka(H2PO4-)=6.2x10 power-8). Sorry if the power is confusing. My computer does not have the symbol. Thanks
  71. Chemestry

    A 1L of buffer was prepared from 0.15 mole of Na2HPO4 and 0.10 moles KH2PO4. a) What is your pH and what is the pH change that adding of 80.0 mL of 0.100 mol L-1 NaOH cause? b) What happen to the pH after adding 10.0 mL of 1.0 mol L HNO3-1.
  72. AP CHEM

    You need to use KH2PO4 and K2HPO4 to prepare a buffer with a pH of 7.45. Which of the following ratios of [base]/[acid] is required? For phosphoric acid, (H3PO4), Ka2 = 6.2 × 10–8. Do I use the Hasselbach equation?
  73. Chemistry

    A reaction is said to be diffusion controlled when it occurs as fast as the reactants diffuse through the solution. The following is an example of a diffusion controlled reaction. The rate constant for this reaction is 1.4x1011 M-1s-1 at 25oC and the reaction obeys the ...
  74. geography

    russians today can choose from among: A)20 to 30 newspaper and journals B)10,000 newspaper and journals C)1,000 newspaper and journals D)three newspaper my choice is b under soviet system the government: A)controlled all forms of communication B)allowed newspaper to print ...
  75. physics 30

    Draw a scenerio with a magnet and the solenoid below that would induce a flow of electrons to the right of the page in the ammeter, as shown below.
  76. Physics

    If A Wire Of Length 250m Is Place In A Magnetic Field Of 575militesla And Conductor Move 25m/s Across The Field, Find The E.M.F Induce
  77. English

    Writing Assignment: Using the novel Dr. Jekyl and Mr. hyde, the poem The Rime Of The Ancient Mariner, and the video, the Picture Of Dorian Gray develop a three part essay, five paragraphs, discussing whether the evil side of man is controlled or not controlled by man's ...
  78. Pharmaceutical Dosage Forms

    If there is 1 g KH2PO4 and 1 g K2HPO4 in 100mL of solution, what is the mEq/mL of potassium? The Answer is 0.19mEq/mL. But I need to show work on how to get the answer. Textbook Applied physical pharmacy By Mansoor M. Amiji, Beverly J. Sandmann Chapter 3
  79. Chemistry

    Calculate the pH of a potassium phosphate buffer if the pKa of KH2PO4 is 7.2 and the acid-base ratio is 2:1 I took Chemistry 7 years ago and am in a review for a Biochem course I am takin. I do not remember the basics so any help with how to get started or what equations to ...
  80. chemistry

    what is the cell potential of the following cell: a platinum wire placed into a mixture of: KIO4 (0.02M), KIO3 (0.040M), H3PO4 (0.10M), KH2PO4 (0.40M) assuming it is put against a Ag/AgCl reference electrode?
  81. Biochem

    Using stocks of 0.1 M KH2PO4 and 0.1 M K2HPO4 how much 0.1 M K2HPO4 is needed to prepare 20 mL of a buffer solution at pH 7.2. The pKa of phosphate is 6.82. I know to solve for the ratio using henderson hasselbach but im lots after that! 5.2=6.82+log(A/HA) 1.0024HA=A
  82. History

    What was a major motivational factor for sailing expeditions during the Age of Discovery? orthodox Christians controlled the overland routes to the Asian spice markets muslims controlled the overland routes to Asian spice markets European monarchs sought refuge from the ...
  83. physio

    satiety would be induced by all of the following EXCEPT a. cholecystokinin b. naloxone c. morphine d.seratonin I know its not a or c, because those induce satiety. I'm stuck between b and c ...i think its b though
  84. History

    What was a major motivational factor for sailing expeditions during the Age of Discovery? European monarchs sought refuge from the bubonic plague ravaging Europe at the time. The Catholic Church paid monarchs large sums of money to find the fabled hero Prester John. Orthodox ...
  85. CHEMISTRY

    Calculate the pH of a solution contain 0.300 mole per liter of KH2PO4 and 0.0150 mole per liter of K2HPO4.
  86. ACCOUNTING

    Padding a budget __________________________________. (Points : 1) A is a smart use of company funds by a manager B does little to advance organizational efficiency C may induce wasteful spending D is impacted by more than one of the solutions listed here ANSWER B
  87. science

    How did Lamarck and Darwin differ in their thinking about species? A. Darwin thought that organisms could induce their own changes, while Lamarck thought that change could only be induced by an organism's environment. B. Darwin thought that change could occur in individual ...
  88. chemistry

    using the following salts listed below, calculate the moles of acid and conjugate base needed to make 100 ml of 0.50 M, ph 6.5,6.7, and 6.8 phosphate buffer solution. (For H2PO4-, pka=6.64) Salt Molar mass, g/mol KH2PO4 136.09 NaH2PO4*H2O 137.99 Na2HPO4*7H2O 268.09 K2HPO4 174.2
  89. physics 30

    A magnet dropped through a vertical solenoid will fall at a rate that is slower than gravity, and will induce an electric current within the solenoid. which physics principle explain these phenomena ?
  90. biology

    (Which of the following would least likely induce thirst) a)Dry pharynx b)Decrease blood volume c)decrease blood pressure d)decreased blood osmolarity
  91. biology

    (Which of the following would least likely induce thirst) a)Dry pharynx b)Decrease blood volume c)decrease blood pressure d)decreased blood osmolarity
  92. Science

    In this study, a scientist designed an experiment to test plant growth. The plants were planted in identical pots with the same brand of potting soil. Each plant was watered with 20 ml of spring water every third day at 9:00 AM. Name the controlled portion of this experiment, ...
  93. Biochemstry

    1. A buffer was prepared by dissolving 11.7 g of KH2PO4 in 400 mL of water, and with the addition of concentrated solution of KOH the pH was adjusted to 7.10. The volume was then adjusted to 500 mL. What are the [PO43-], [HPO42-], [H2PO41-], and [H3PO4]? Use pKa values of 2.12...
  94. Biology

    Exogenous treatment with the plant hormone, ABA or auxin, induces enhanced susceptibility against biotrophic pathogens. Design an experiment that can reveal whether these hormones use the same signalling pathway or independent pathways to induce susceptibility.
  95. science

    i need helping answering this homework question on magnetism: which of the following will induce a current in a nearby circuit? A. any magnetic field B. an electromagnet with varying current C. an unchanging electromagnet D. a powerful, unmoving horseshoe magnet
  96. Chemistry

    As a technician in a large pharmaceutical research firm, you need to produce 400. mL of 1.00 M potassium phosphate solution of pH = 7.18. The pKa of H2PO4- is 7.21. You have 2.00 L of 1.00 M KH2PO4 solution and 1.50 L of 1.00 M K2HPO4 solution, as well as a carboy of pure ...
  97. science

    what is a controlled variable
  98. Biology

    What are the parts of a controlled experiment?
  99. 6th grade

    what is a controlled varible
  100. Science

    How do you define a controlled experiment?
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